Sudden unloading of a diesel engine ca

1、The crankcase of many diesel engines a

The crankcase of many diesel engines are kept under a slight vacuum by the （）.Ascavenging action of the pistonBpiston type vacuum pump taking suction off a differential manometerCgland exhausting manometerDcrankcase exhaust fa

2、Maximum horsepower of a diesel engine

Maximum horsepower of a diesel engine is attained （）.Awhen the engine RPM is pulled down by overloadBat rated engine RPMCat 95 % of rated engine RPMDat 95 % of a properly adjusted governor RPM with the engine under full load

3、The exhaust system of a diesel engine

The exhaust system of a diesel engine is usually designed to remove exhaust gases and to （）Aprovide exhaust back pressureBprevent exhaust smoke emissionsCpower a reciprocating superchargerDmuffle exhaust gas noise

4、Routine monitoring of a diesel engine

Routine monitoring of a diesel engine should include （）.Achecking for leaksBchecking temperatures and pressuresClistening for abnormal noisesDall of the above

5、Improper cooling of a diesel engine cy

Improper cooling of a diesel engine cylinder liner due to the accumulation of scale deposits may cause （）.Alow compression pressureBincreased piston wearCincreased cylinder lube oil consumptionDpoor contact between compression rings and liner

6、In the construction of a diesel engine

In the construction of a diesel engine, what is the purpose of end plates?（）ATo provide accessibility to the cylinder linersBTo add stability...